DQ Marine

Marine Equipment & Technical Supplies

TECHNICAL DATASHEET Issued 2026-09-13

DQ MARINE PRODUCT DATA

Dual Plate Check Valve

Category
GB/CB/CBM Valve
Origin
China
Dual Plate Check Valve

Product Overview

DQ Marine supplies marine equipment and technical products for shipyards, vessel operators, offshore projects and industrial buyers worldwide.

Key Specifications

Category GB/CB/CBM Valve
Model / SKU dual-plate-check-valve
Origin China

Technical Information

China Dual Plate Check Valve:

Dual Plate Check valve is also called wafer butterfly check valve, dual disc check valve. Itautomatically opens and close by the flow of the medium itself to prevent the back flow of the medium.

Technical Specification:

1. Working Pressure: 0.05~1.0Mpa

2. Opening Pressure: <=0.05Mpa

3. Suitable Medium: fresh water, sea water, oil

Main Parts & Material:

1.Body---Cast Iron, Nodular Iron, WCB, Stainless Steel

2.Disc---Nodular Iron with galv,Bronze, Stainless Steel

3.Seat---NBR, EPDM

4.Screw Plug---Stainless Steel

5.Stem---Stainless Steel

6. Gasket--F4

7.Spring---Stainless Steel

Main Size (mm):

ISO 0.6Mpa

DN valve dimension
L D t R
50 43 96 19 28.8
65 46 116 20 36.1
80 64 132 23 43.4
100 64 152 26 52.8
125 70 182 30 65.7
150 76 207 31 78.6
200 89 262 33 104.4
250 114 317 45 127
300 114 372 45 147
350 127 422 50 173
400 140 472 54 198
450 152 527 58 217.8
500 152 577 58 241
600 178 678 73 298

ISO 1.0Mpa:

DN valve dimension
L D t R
50 43 107 19 28.8
65 46 127 20 36.1
80 64 142 23 43.4
100 64 162 26 52.8
125 70 192 30 65.7
150 76 218 31 78.6
200 89 273 33 104.4
250 114 327 45 127
300 114 377 45 147
350 127 437 50 173
400 140 488 54 198
450 152 538 58 217.8
500 152 593 58 241
600 178 695 73 298